esp-32, qemu_xtensa: Use asm2 by default

Set these SoCs to use asm2 by default

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
diff --git a/arch/xtensa/soc/esp32/Kconfig.defconfig b/arch/xtensa/soc/esp32/Kconfig.defconfig
index c6985ae..8abd618 100644
--- a/arch/xtensa/soc/esp32/Kconfig.defconfig
+++ b/arch/xtensa/soc/esp32/Kconfig.defconfig
@@ -12,4 +12,7 @@
 config IRQ_OFFLOAD_INTNUM
 	default 7
 
+config XTENSA_ASM2
+	def_bool y
+
 endif
diff --git a/arch/xtensa/soc/sample_controller/Kconfig.defconfig b/arch/xtensa/soc/sample_controller/Kconfig.defconfig
index b485d3c..20136c2 100644
--- a/arch/xtensa/soc/sample_controller/Kconfig.defconfig
+++ b/arch/xtensa/soc/sample_controller/Kconfig.defconfig
@@ -13,4 +13,7 @@
 config IRQ_OFFLOAD_INTNUM
 	default 7
 
+config XTENSA_ASM2
+	def_bool y
+
 endif